removing redundant asyncio.ensure_future() in retrieval.py

backend/open_webui/routers/retrieval.py

@@ -2064,14 +2064,12 @@ async def process_web_search(
         )
 
         search_tasks = [
-            asyncio.ensure_future(
             run_in_threadpool(
                 search_web,
                 request,
                 request.app.state.config.WEB_SEARCH_ENGINE,
                 query,
             )
-            )
             for query in form_data.queries
         ]